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Graph-based light fields representation and coding using geometry information

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Abstract

This paper describes a graph-based coding scheme for light fields (LF). It first adapts graph-based representations (GBR) to describe color and geometry information of LF. Graph connections describing scene geometry capture interview dependencies. They are used as the support of a weighted Graph Fourier Transform (wGFT) to encode disoccluded pixels. The quality of the LF reconstructed from the graph is enhanced by adding extra color information to the representation for a subset of sub-aperture images. Experiments show that the proposed scheme yields rate-distortion gains compared with HEVC based compression (directly compressing the LF as a video sequence by HEVC).
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Dates and versions

hal-01589626 , version 1 (18-09-2017)

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Xin Su, Mira Rizkallah, Thomas Maugey, Christine Guillemot. Graph-based light fields representation and coding using geometry information. ICIP 2017 - IEEE International Conference on Image Processing, IEEE, Sep 2017, Beijing, China. pp.4023-4027, ⟨10.1109/ICIP.2017.8297038⟩. ⟨hal-01589626⟩
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